第二章 使用Matplotlib绘制简单图表
import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
x = np.linspace(0, 2*np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x,y1,label='sin(x)',color='red')
plt.plot(x,y2,label='cos(x)',color='blue',linestyle='--')
plt.legend()
plt.grid(alpha=0.3)
plt.title("sin、cos函数折线图")
plt.show()